Gates, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 41.6 °F (low) to 60.4 °F (high). Annual precipitation averages 68.8 Inches. Gates is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.2 °F | 45.2 °F | 9.01 in. |
| February | 33.7 °F | 48.6 °F | 7.04 in. |
| March | 35.9 °F | 53.0 °F | 8.01 in. |
| April | 39.0 °F | 57.5 °F | 6.73 in. |
| May | 43.9 °F | 64.5 °F | 4.74 in. |
| June | 48.5 °F | 69.8 °F | 2.98 in. |
| July | 52.4 °F | 78.3 °F | 0.6 in. |
| August | 52.3 °F | 79.2 °F | 0.73 in. |
| September | 47.9 °F | 73.1 °F | 2.47 in. |
| October | 42.5 °F | 60.9 °F | 5.92 in. |
| November | 37.1 °F | 50.1 °F | 9.68 in. |
| December | 33.1 °F | 44.1 °F | 10.91 in. |
| Annual | 41.6 °F | 60.4 °F | 68.82 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |